1. "Where are you going on vacation this summer?" asked Harry. => Harry asked...... 2. The questions are so difficult that we can answer them. (enough) => The questions......

`1.` Harry asked where I was going on vacation that summer.

`-` Nghi vấn : S + asked/ wanted to know/ wondered + Wh + S + V ( đổi ngôi / lùi thì )

`-` HTTD `->` QKTD

`-` this `->` that

`2.` The questions are not easy enough for us to answer.

`-` S + Be/V + too + adj/adv + (for someone) + to do something: Quá....để cho ai làm gì...

`-` S + Be/V + so + adj/ adv + that + S + V+O: Quá... đến nỗi mà...